Navigational controller of a handheld electronic device



FIG. 1 is a front perspective view of a navigational controller of a handheld electronic device; and,

FIG. 2 is a front elevational view thereof.

The broken lines beneath the navigation row represent boundaries of the unclaimed area. The broken line showing of a handheld electronic device is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

The ornamental design for a navigational controller of a handheld electronic device, as shown and described. 